(CBS NEWS) Pope Benedict XVI basked in an emotional sendoff Wednesday at his final general audience in St. Peter’s Square, recalling moments of “joy and light” during his papacy but also times of great difficulty. He also thanked his flock for respecting his decision to retire.

Tens of thousands of people toting banners saying “Grazie!” — “Thank you” — jammed the piazza in Rome to bid Benedict farewell and join the appointment he has kept each week for eight years to teach the world about the Catholic faith.

Benedict clearly enjoyed the crowds, taking a long victory lap around the square in an open-sided car and stopping to kiss and bless half a dozen children handed to him by his secretary.